Instant Code Preview

Preview HTML, JavaScript, CSS, Mermaid diagrams, and SVG code directly on You.com, ChatGPT, and Deepseek.

Install Chrome Extension

Key Features

Web Code Preview

Instantly preview HTML, CSS, and JavaScript with external CDN support. Perfect for rapid prototyping and testing.

  • Live preview
  • External CDN support
  • Responsive testing
  • JavaScript execution
  • Console output

Diagram Generation

Create beautiful diagrams and flowcharts with Mermaid syntax.

  • Flowcharts
  • Sequence diagrams
  • Real-time rendering

SVG Preview

Preview and test SVG code with instant rendering.

  • Live preview
  • Vector graphics
  • Responsive SVG

How It Works

1

Write Code

Write your HTML, CSS, JavaScript, or Mermaid code

2

Instant Preview

See your code come to life with real-time preview

3

Share & Collaborate

Share your work with others using unique URLs

CodePeek Preview Demo

Chrome Extension

  • Works on You.com, ChatGPT, and Deepseek
  • Automatic code detection
  • Real-time preview
  • External CDN support
  • Multiple language support
Install from Chrome Web Store